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Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

DM54

b

DM74LS

Storage Temperature Range

b

Note

The ‘‘Absolute Maximum Ratings’’ are those values

beyond which the safety of the device cannot be guaran-

teed The device should not be operated at these limits The

parametric values defined in the ‘‘Electrical Characteristics’’

table are not guaranteed at the absolute maximum ratings

The ‘‘Recommended Operating Conditions’’ table will define

the conditions for actual device operation

Recommended Operating Conditions

Symbol

Parameter

DM54LS259

DM74LS259

Units

Min

Nom

Max

Min

Nom

Max

Supply Voltage

45

5

55

475

5

525

V

High Level Input Voltage

2

2

V

Low Level Input Voltage

07

08

V

High Level Output Current

b

04

b

04

mA

Low Level Output Current

4

8

mA

Pulse Width

Enable

17

15

ns

(Note 7)

Clear

17

15

Setup Time

Data

20

u

15

u

ns

(Notes 1 2 37)

Select

15

v

15

v

Hold Time

Data

5

u

25

u

ns

(Notes 1 27)

Select

0

u

25

u

Free Air Operating Temperature

b

55

125

0

70

C

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 4)

Input Clamp Voltage

b

15

V

High Level Output

DM54

25

V

Voltage

DM74

27

34

Low Level Output

DM54

04

Voltage

DM74

035

05

V

DM74

025

04

Input Current

Max

DM74

01

mA

Input Voltage

DM54

High Level Input

20

m

A

Current

Low Level Input

b

04

Current

mA

Enable

b

08

Short Circuit

DM54

b

20

b

100

mA

Output Current

(Note 5)

DM74

b

20

b

100

Supply Current

22

36

mA

Note 1

The symbols (

Note 2

Setup and hold times are with reference to the enable input

Note 3

The select-to-enable setup time is the time before the High-to-Low enable transition that the select must be stable so that the correct latch is selected and

the others not affected

Note 4

Note 5

Not more than one output should be shorted at a time and the duration should not exceed one second

Note 6

Note 7

2